TEST(GIFImageDecoderTest, resumePartialDecodeAfterClearFrameBufferCache)
{
RefPtr<SharedBuffer> fullData = readFile("/LayoutTests/fast/images/resources/animated-10color.gif");
ASSERT_TRUE(fullData.get());
Vector<unsigned> baselineHashes;
createDecodingBaseline(fullData.get(), &baselineHashes);
size_t frameCount = baselineHashes.size();
OwnPtr<GIFImageDecoder> decoder = createDecoder();
// Let frame 0 be partially decoded.
size_t partialSize = 1;
do {
RefPtr<SharedBuffer> data = SharedBuffer::create(fullData->data(), partialSize);
decoder->setData(data.get(), false);
++partialSize;
} while (!decoder->frameCount() || decoder->frameBufferAtIndex(0)->status() == ImageFrame::FrameEmpty);
// Skip to the last frame and clear.
decoder->setData(fullData.get(), true);
EXPECT_EQ(frameCount, decoder->frameCount());
ImageFrame* lastFrame = decoder->frameBufferAtIndex(frameCount - 1);
EXPECT_EQ(baselineHashes[frameCount - 1], hashSkBitmap(lastFrame->getSkBitmap()));
decoder->clearCacheExceptFrame(kNotFound);
// Resume decoding of the first frame.
ImageFrame* firstFrame = decoder->frameBufferAtIndex(0);
EXPECT_EQ(ImageFrame::FrameComplete, firstFrame->status());
EXPECT_EQ(baselineHashes[0], hashSkBitmap(firstFrame->getSkBitmap()));
}
TEST(GIFImageDecoderTest, progressiveDecode)
{
RefPtr<SharedBuffer> fullData = readFile("/Source/web/tests/data/radient.gif");
ASSERT_TRUE(fullData.get());
const size_t fullLength = fullData->size();
OwnPtr<GIFImageDecoder> decoder;
ImageFrame* frame;
Vector<unsigned> truncatedHashes;
Vector<unsigned> progressiveHashes;
// Compute hashes when the file is truncated.
const size_t increment = 1;
for (size_t i = 1; i <= fullLength; i += increment) {
decoder = createDecoder();
RefPtr<SharedBuffer> data = SharedBuffer::create(fullData->data(), i);
decoder->setData(data.get(), i == fullLength);
frame = decoder->frameBufferAtIndex(0);
if (!frame) {
truncatedHashes.append(0);
continue;
}
truncatedHashes.append(hashSkBitmap(frame->getSkBitmap()));
}
// Compute hashes when the file is progressively decoded.
decoder = createDecoder();
EXPECT_EQ(cAnimationLoopOnce, decoder->repetitionCount());
for (size_t i = 1; i <= fullLength; i += increment) {
RefPtr<SharedBuffer> data = SharedBuffer::create(fullData->data(), i);
decoder->setData(data.get(), i == fullLength);
frame = decoder->frameBufferAtIndex(0);
if (!frame) {
progressiveHashes.append(0);
continue;
}
progressiveHashes.append(hashSkBitmap(frame->getSkBitmap()));
}
EXPECT_EQ(cAnimationNone, decoder->repetitionCount());
bool match = true;
for (size_t i = 0; i < truncatedHashes.size(); ++i) {
if (truncatedHashes[i] != progressiveHashes[i]) {
match = false;
break;
}
}
EXPECT_TRUE(match);
}
void downsample(size_t maxDecodedBytes, unsigned* outputWidth, unsigned* outputHeight, const char* imageFilePath)
{
RefPtr<SharedBuffer> data = readFile(imageFilePath);
ASSERT_TRUE(data.get());
OwnPtr<JPEGImageDecoder> decoder = createDecoder(maxDecodedBytes);
decoder->setData(data.get(), true);
ImageFrame* frame = decoder->frameBufferAtIndex(0);
ASSERT_TRUE(frame);
*outputWidth = frame->getSkBitmap().width();
*outputHeight = frame->getSkBitmap().height();
EXPECT_EQ(IntSize(*outputWidth, *outputHeight), decoder->decodedSize());
}
TEST(AnimatedWebPTests, uniqueGenerationIDs)
{
OwnPtr<WEBPImageDecoder> decoder = createDecoder();
RefPtr<SharedBuffer> data = readFile("/LayoutTests/fast/images/resources/webp-animated.webp");
ASSERT_TRUE(data.get());
decoder->setData(data.get(), true);
ImageFrame* frame = decoder->frameBufferAtIndex(0);
uint32_t generationID0 = frame->getSkBitmap().getGenerationID();
frame = decoder->frameBufferAtIndex(1);
uint32_t generationID1 = frame->getSkBitmap().getGenerationID();
EXPECT_TRUE(generationID0 != generationID1);
}
TEST(AnimatedWebPTests, progressiveDecode)
{
RefPtr<SharedBuffer> fullData = readFile("/LayoutTests/fast/images/resources/webp-animated.webp");
ASSERT_TRUE(fullData.get());
const size_t fullLength = fullData->size();
OwnPtr<WEBPImageDecoder> decoder;
ImageFrame* frame;
Vector<unsigned> truncatedHashes;
Vector<unsigned> progressiveHashes;
// Compute hashes when the file is truncated.
const size_t increment = 1;
for (size_t i = 1; i <= fullLength; i += increment) {
decoder = createDecoder();
RefPtr<SharedBuffer> data = SharedBuffer::create(fullData->data(), i);
decoder->setData(data.get(), i == fullLength);
frame = decoder->frameBufferAtIndex(0);
if (!frame) {
truncatedHashes.append(0);
continue;
}
truncatedHashes.append(hashSkBitmap(frame->getSkBitmap()));
}
// Compute hashes when the file is progressively decoded.
decoder = createDecoder();
for (size_t i = 1; i <= fullLength; i += increment) {
RefPtr<SharedBuffer> data = SharedBuffer::create(fullData->data(), i);
decoder->setData(data.get(), i == fullLength);
frame = decoder->frameBufferAtIndex(0);
if (!frame) {
progressiveHashes.append(0);
continue;
}
progressiveHashes.append(hashSkBitmap(frame->getSkBitmap()));
}
bool match = true;
for (size_t i = 0; i < truncatedHashes.size(); ++i) {
if (truncatedHashes[i] != progressiveHashes[i]) {
match = false;
break;
}
}
EXPECT_TRUE(match);
}
const ScaledImageFragment* ImageFrameGenerator::tryToDecodeAndScale(const SkISize& scaledSize)
{
RefPtr<SharedBuffer> data;
bool allDataReceived = false;
{
MutexLocker lock(m_dataMutex);
// FIXME: We should do a shallow copy instead. Now we're restricted by the API of SharedBuffer.
data = m_data->copy();
allDataReceived = m_allDataReceived;
}
OwnPtr<ImageDecoder> decoder(adoptPtr(ImageDecoder::create(*data.get(), ImageSource::AlphaPremultiplied, ImageSource::GammaAndColorProfileApplied)));
if (!decoder && m_imageDecoderFactory)
decoder = m_imageDecoderFactory->create();
if (!decoder)
return 0;
decoder->setData(data.get(), allDataReceived);
ImageFrame* frame = decoder->frameBufferAtIndex(0);
if (!frame || frame->status() == ImageFrame::FrameEmpty)
return 0;
bool isComplete = frame->status() == ImageFrame::FrameComplete;
SkBitmap fullSizeBitmap = frame->getSkBitmap();
ASSERT(fullSizeBitmap.width() == m_fullSize.width() && fullSizeBitmap.height() == m_fullSize.height());
const ScaledImageFragment* fullSizeImage = ImageDecodingStore::instance()->insertAndLockCache(
this, ScaledImageFragment::create(m_fullSize, fullSizeBitmap, isComplete));
if (m_fullSize == scaledSize)
return fullSizeImage;
return tryToScale(fullSizeImage, scaledSize);
}
TEST(BMPImageDecoderTest, parseAndDecode)
{
const char* bmpFile = "/LayoutTests/fast/images/resources/lenna.bmp"; // 256x256
RefPtr<SharedBuffer> data = readFile(bmpFile);
ASSERT_TRUE(data.get());
OwnPtr<ImageDecoder> decoder = createDecoder();
decoder->setData(data.get(), true);
ImageFrame* frame = decoder->frameBufferAtIndex(0);
ASSERT_TRUE(frame);
EXPECT_EQ(ImageFrame::FrameComplete, frame->status());
EXPECT_EQ(256, frame->getSkBitmap().width());
EXPECT_EQ(256, frame->getSkBitmap().height());
EXPECT_FALSE(decoder->failed());
}
bool ImageFrameGenerator::decode(size_t index, ImageDecoder** decoder, SkBitmap* bitmap)
{
TRACE_EVENT2("blink", "ImageFrameGenerator::decode", "width", m_fullSize.width(), "height", m_fullSize.height());
ASSERT(decoder);
SharedBuffer* data = 0;
bool allDataReceived = false;
bool newDecoder = false;
m_data.data(&data, &allDataReceived);
// Try to create an ImageDecoder if we are not given one.
if (!*decoder) {
newDecoder = true;
if (m_imageDecoderFactory)
*decoder = m_imageDecoderFactory->create().leakPtr();
if (!*decoder)
*decoder = ImageDecoder::create(*data, ImageSource::AlphaPremultiplied, ImageSource::GammaAndColorProfileApplied).leakPtr();
if (!*decoder)
return false;
}
if (!m_isMultiFrame && newDecoder && allDataReceived) {
// If we're using an external memory allocator that means we're decoding
// directly into the output memory and we can save one memcpy.
ASSERT(m_externalAllocator.get());
(*decoder)->setMemoryAllocator(m_externalAllocator.get());
}
(*decoder)->setData(data, allDataReceived);
ImageFrame* frame = (*decoder)->frameBufferAtIndex(index);
// For multi-frame image decoders, we need to know how many frames are
// in that image in order to release the decoder when all frames are
// decoded. frameCount() is reliable only if all data is received and set in
// decoder, particularly with GIF.
if (allDataReceived)
m_frameCount = (*decoder)->frameCount();
(*decoder)->setData(0, false); // Unref SharedBuffer from ImageDecoder.
(*decoder)->clearCacheExceptFrame(index);
(*decoder)->setMemoryAllocator(0);
if (!frame || frame->status() == ImageFrame::FrameEmpty)
return false;
// A cache object is considered complete if we can decode a complete frame.
// Or we have received all data. The image might not be fully decoded in
// the latter case.
const bool isDecodeComplete = frame->status() == ImageFrame::FrameComplete || allDataReceived;
SkBitmap fullSizeBitmap = frame->getSkBitmap();
if (!fullSizeBitmap.isNull())
{
ASSERT(fullSizeBitmap.width() == m_fullSize.width() && fullSizeBitmap.height() == m_fullSize.height());
setHasAlpha(index, !fullSizeBitmap.isOpaque());
}
*bitmap = fullSizeBitmap;
return isDecodeComplete;
}
TEST(GIFImageDecoderTest, badTerminator)
{
RefPtr<SharedBuffer> referenceData = readFile("/Source/web/tests/data/radient.gif");
RefPtr<SharedBuffer> testData = readFile("/Source/web/tests/data/radient-bad-terminator.gif");
ASSERT_TRUE(referenceData.get());
ASSERT_TRUE(testData.get());
OwnPtr<GIFImageDecoder> referenceDecoder(createDecoder());
referenceDecoder->setData(referenceData.get(), true);
EXPECT_EQ(1u, referenceDecoder->frameCount());
ImageFrame* referenceFrame = referenceDecoder->frameBufferAtIndex(0);
ASSERT(referenceFrame);
OwnPtr<GIFImageDecoder> testDecoder(createDecoder());
testDecoder->setData(testData.get(), true);
EXPECT_EQ(1u, testDecoder->frameCount());
ImageFrame* testFrame = testDecoder->frameBufferAtIndex(0);
ASSERT(testFrame);
EXPECT_EQ(hashSkBitmap(referenceFrame->getSkBitmap()), hashSkBitmap(testFrame->getSkBitmap()));
}
TEST(GIFImageDecoderTest, decodeTwoFrames)
{
OwnPtr<GIFImageDecoder> decoder = createDecoder();
RefPtr<SharedBuffer> data = readFile("/LayoutTests/fast/images/resources/animated.gif");
ASSERT_TRUE(data.get());
decoder->setData(data.get(), true);
EXPECT_EQ(cAnimationLoopOnce, decoder->repetitionCount());
ImageFrame* frame = decoder->frameBufferAtIndex(0);
uint32_t generationID0 = frame->getSkBitmap().getGenerationID();
EXPECT_EQ(ImageFrame::FrameComplete, frame->status());
EXPECT_EQ(16, frame->getSkBitmap().width());
EXPECT_EQ(16, frame->getSkBitmap().height());
frame = decoder->frameBufferAtIndex(1);
uint32_t generationID1 = frame->getSkBitmap().getGenerationID();
EXPECT_EQ(ImageFrame::FrameComplete, frame->status());
EXPECT_EQ(16, frame->getSkBitmap().width());
EXPECT_EQ(16, frame->getSkBitmap().height());
EXPECT_TRUE(generationID0 != generationID1);
EXPECT_EQ(2u, decoder->frameCount());
EXPECT_EQ(cAnimationLoopInfinite, decoder->repetitionCount());
}
static bool decodeBitmap(const void* data, size_t length, SkBitmap* result)
{
RefPtr<SharedBuffer> buffer = SharedBuffer::create(static_cast<const char*>(data), length);
OwnPtr<ImageDecoder> imageDecoder = ImageDecoder::create(*buffer, ImageDecoder::AlphaPremultiplied, ImageDecoder::GammaAndColorProfileIgnored);
if (!imageDecoder)
return false;
imageDecoder->setData(buffer.get(), true);
ImageFrame* frame = imageDecoder->frameBufferAtIndex(0);
if (!frame)
return true;
*result = frame->getSkBitmap();
return true;
}
TEST_F(DeferredImageDecoderTest, singleFrameImageLoading)
{
m_status = ImageFrame::FramePartial;
m_lazyDecoder->setData(*m_data, false);
EXPECT_FALSE(m_lazyDecoder->frameIsCompleteAtIndex(0));
ImageFrame* frame = m_lazyDecoder->frameBufferAtIndex(0);
unsigned firstId = frame->getSkBitmap().getGenerationID();
EXPECT_EQ(ImageFrame::FramePartial, frame->status());
EXPECT_TRUE(m_actualDecoder);
m_status = ImageFrame::FrameComplete;
m_data->append(" ", 1);
m_lazyDecoder->setData(*m_data, true);
EXPECT_FALSE(m_actualDecoder);
EXPECT_TRUE(m_lazyDecoder->frameIsCompleteAtIndex(0));
frame = m_lazyDecoder->frameBufferAtIndex(0);
unsigned secondId = frame->getSkBitmap().getGenerationID();
EXPECT_EQ(ImageFrame::FrameComplete, frame->status());
EXPECT_FALSE(m_frameBufferRequestCount);
EXPECT_NE(firstId, secondId);
EXPECT_EQ(secondId, m_lazyDecoder->frameBufferAtIndex(0)->getSkBitmap().getGenerationID());
}
TEST(GIFImageDecoderTest, parseAndDecode)
{
OwnPtr<GIFImageDecoder> decoder = createDecoder();
RefPtr<SharedBuffer> data = readFile("/LayoutTests/fast/images/resources/animated.gif");
ASSERT_TRUE(data.get());
decoder->setData(data.get(), true);
EXPECT_EQ(cAnimationLoopOnce, decoder->repetitionCount());
// This call will parse the entire file.
EXPECT_EQ(2u, decoder->frameCount());
ImageFrame* frame = decoder->frameBufferAtIndex(0);
EXPECT_EQ(ImageFrame::FrameComplete, frame->status());
EXPECT_EQ(16, frame->getSkBitmap().width());
EXPECT_EQ(16, frame->getSkBitmap().height());
frame = decoder->frameBufferAtIndex(1);
EXPECT_EQ(ImageFrame::FrameComplete, frame->status());
EXPECT_EQ(16, frame->getSkBitmap().width());
EXPECT_EQ(16, frame->getSkBitmap().height());
EXPECT_EQ(cAnimationLoopInfinite, decoder->repetitionCount());
}
PassOwnPtr<ScaledImageFragment> ImageFrameGenerator::decode(ImageDecoder** decoder)
{
TRACE_EVENT2("webkit", "ImageFrameGenerator::decode", "width", m_fullSize.width(), "height", m_fullSize.height());
ASSERT(decoder);
SharedBuffer* data = 0;
bool allDataReceived = false;
m_data.data(&data, &allDataReceived);
// Try to create an ImageDecoder if we are not given one.
if (!*decoder) {
*decoder = ImageDecoder::create(*data, ImageSource::AlphaPremultiplied, ImageSource::GammaAndColorProfileApplied).leakPtr();
if (!*decoder && m_imageDecoderFactory)
*decoder = m_imageDecoderFactory->create().leakPtr();
if (!*decoder)
return nullptr;
}
// TODO: this is very ugly. We need to refactor the way how we can pass a
// memory allocator to image decoders.
(*decoder)->setMemoryAllocator(&m_allocator);
(*decoder)->setData(data, allDataReceived);
// If this call returns a newly allocated DiscardablePixelRef, then
// ImageFrame::m_bitmap and the contained DiscardablePixelRef are locked.
// They will be unlocked when ImageDecoder is destroyed since ImageDecoder
// owns the ImageFrame. Partially decoded SkBitmap is thus inserted into the
// ImageDecodingStore while locked.
ImageFrame* frame = (*decoder)->frameBufferAtIndex(0);
(*decoder)->setData(0, false); // Unref SharedBuffer from ImageDecoder.
if (!frame || frame->status() == ImageFrame::FrameEmpty)
return nullptr;
bool isComplete = frame->status() == ImageFrame::FrameComplete;
SkBitmap fullSizeBitmap = frame->getSkBitmap();
{
MutexLocker lock(m_alphaMutex);
m_hasAlpha = !fullSizeBitmap.isOpaque();
}
ASSERT(fullSizeBitmap.width() == m_fullSize.width() && fullSizeBitmap.height() == m_fullSize.height());
return ScaledImageFragment::create(m_fullSize, fullSizeBitmap, isComplete);
}
void CanvasImageDecoder::OnDataComplete() {
OwnPtr<ImageDecoder> decoder =
ImageDecoder::create(*buffer_.get(), ImageSource::AlphaPremultiplied,
ImageSource::GammaAndColorProfileIgnored);
// decoder can be null if the buffer we was empty and we couldn't even guess
// what type of image to decode.
if (!decoder) {
callback_->handleEvent(nullptr);
return;
}
decoder->setData(buffer_.get(), true);
if (decoder->failed() || decoder->frameCount() == 0) {
callback_->handleEvent(nullptr);
return;
}
RefPtr<CanvasImage> resultImage = CanvasImage::create();
ImageFrame* imageFrame = decoder->frameBufferAtIndex(0);
RefPtr<SkImage> skImage = adoptRef(SkImage::NewFromBitmap(imageFrame->getSkBitmap()));
resultImage->setImage(skImage.release());
callback_->handleEvent(resultImage.get());
}
PassOwnPtr<ScaledImageFragment> ImageFrameGenerator::decode(size_t index, ImageDecoder** decoder)
{
TRACE_EVENT2("webkit", "ImageFrameGenerator::decode", "width", m_fullSize.width(), "height", m_fullSize.height());
ASSERT(decoder);
SharedBuffer* data = 0;
bool allDataReceived = false;
m_data.data(&data, &allDataReceived);
// Try to create an ImageDecoder if we are not given one.
if (!*decoder) {
if (m_imageDecoderFactory)
*decoder = m_imageDecoderFactory->create().leakPtr();
if (!*decoder)
*decoder = ImageDecoder::create(*data, ImageSource::AlphaPremultiplied, ImageSource::GammaAndColorProfileApplied).leakPtr();
if (!*decoder)
return nullptr;
}
// TODO: this is very ugly. We need to refactor the way how we can pass a
// memory allocator to image decoders.
if (!m_isMultiFrame)
(*decoder)->setMemoryAllocator(&m_allocator);
(*decoder)->setData(data, allDataReceived);
// If this call returns a newly allocated DiscardablePixelRef, then
// ImageFrame::m_bitmap and the contained DiscardablePixelRef are locked.
// They will be unlocked when ImageDecoder is destroyed since ImageDecoder
// owns the ImageFrame. Partially decoded SkBitmap is thus inserted into the
// ImageDecodingStore while locked.
ImageFrame* frame = (*decoder)->frameBufferAtIndex(index);
(*decoder)->setData(0, false); // Unref SharedBuffer from ImageDecoder.
(*decoder)->clearCacheExceptFrame(index);
if (!frame || frame->status() == ImageFrame::FrameEmpty)
return nullptr;
const bool isComplete = frame->status() == ImageFrame::FrameComplete;
SkBitmap fullSizeBitmap = frame->getSkBitmap();
{
MutexLocker lock(m_alphaMutex);
if (index >= m_hasAlpha.size()) {
const size_t oldSize = m_hasAlpha.size();
m_hasAlpha.resize(index + 1);
for (size_t i = oldSize; i < m_hasAlpha.size(); ++i)
m_hasAlpha[i] = true;
}
m_hasAlpha[index] = !fullSizeBitmap.isOpaque();
}
ASSERT(fullSizeBitmap.width() == m_fullSize.width() && fullSizeBitmap.height() == m_fullSize.height());
if (isComplete)
return ScaledImageFragment::createComplete(m_fullSize, index, fullSizeBitmap);
// If the image is partial we need to return a copy. This is to avoid future
// decode operations writing to the same bitmap.
SkBitmap copyBitmap;
fullSizeBitmap.copyTo(©Bitmap, fullSizeBitmap.config(), &m_allocator);
return ScaledImageFragment::createPartial(m_fullSize, index, nextGenerationId(), copyBitmap);
}
